[英]Merging Excel files into single workbook
I have a requirement to copy all the individual excel files to one single workbook separated by tabs where I'm using ASPOSE API.我需要将所有单独的 excel 文件复制到一个单独的工作簿中,该工作簿由我使用 ASPOSE API 的选项卡分隔。 But its a paid one.
但它是一个付费的。
I have seen another API's which is cell-to-cell copying but its consuming time.我见过另一个 API,它是单元到单元的复制,但它消耗时间。 I don't find any API to copy directly from the sheet.
我没有找到任何可以直接从工作表复制的 API。
Is there any way to copy directly from sheet to sheet?有没有办法直接从工作表复制到工作表?
Here's an example that assumes a directory containing files having the extension .xlsx and each one has a single sheet.这是一个示例,假设一个目录包含扩展名为.xlsx 的文件,并且每个文件都有一张纸。
You will need the following imports:您将需要以下导入:
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
And in the example, read the code comments, please:在示例中,请阅读代码注释:
public static void main(String[] args) {
// provide a path to a folder containing xlsx-workbooks
Path folderWithWorkbooks = Paths.get("Y:\\our\\path\\to\\a\\folder\\with\\workbooks");
// provide a workbook object to be written to
Workbook resultWorkbook = new XSSFWorkbook();
try {
// get the file system objects in that folder
Files.newDirectoryStream(folderWithWorkbooks).forEach(p -> {
// and if one is an xlsx-workbook
if (p.getFileName().toString().endsWith(".xlsx")) {
// try to read its contents
try (FileInputStream fis = new FileInputStream(p
.toAbsolutePath()
.toString())) {
// create the workbook to be parsed
Workbook currentWorkbook = new XSSFWorkbook(fis);
// get the FIRST sheet (adjust code here if you want more sheets)
Sheet sourceSheet = currentWorkbook.getSheetAt(0);
// create a new sheet in the result workbook, name pointing to its origin
Sheet resultSheet = resultWorkbook.createSheet("from "
+ p.getFileName().toString());
// then classicly loop through the rows and cells and copy the contents
for (int r = 0; r < sourceSheet.getPhysicalNumberOfRows(); r++) {
Row sourceRow = sourceSheet.getRow(r);
Row resultRow = resultSheet.createRow(r);
for (int c = 0; c < sourceRow.getPhysicalNumberOfCells(); c++) {
Cell sourceCell = sourceRow.getCell(c);
Cell resultCell = resultRow.createCell(c);
// copy contents with respect to their types
switch (sourceCell.getCellType()) {
case NUMERIC:
resultCell.setCellValue(sourceCell.getNumericCellValue());
break;
case STRING:
resultCell.setCellValue(sourceCell.getStringCellValue());
break;
case FORMULA:
resultCell.setCellValue(sourceCell.getCellFormula());
break;
case BOOLEAN:
resultCell.setCellValue(sourceCell.getBooleanCellValue());
break;
case ERROR:
resultCell.setCellValue(sourceCell.getErrorCellValue());
break;
case BLANK:
case _NONE:
resultCell.setCellValue(sourceCell.getStringCellValue());
break;
}
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
// write the result workbook to the same folder
FileOutputStream fos = new FileOutputStream(folderWithWorkbooks
.resolve("result.xlsx")
.toAbsolutePath()
.toString());
resultWorkbook.write(fos);
fos.flush();
fos.close();
resultWorkbook.close();
} catch (IOException e) {
e.printStackTrace();
}
}
The result will be a workbook in the same directory with a name result.xlsx
.结果将是同一目录中名为
result.xlsx
的工作簿。
Please note that this does not copy any cell formatting or styles.
请注意,这不会复制任何单元格格式或样式。 You would have to add code for it in the section that copies the cell values.
您必须在复制单元格值的部分中为其添加代码。
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